Lind's Candler -Well we built an incubator and a hatcher, we needed a way to Candle the eggs (See the development inside). This was vary inexpensive. Coffee can (Had), a light fixter ($1.89 Ace Hardware) and a extension cord ($1.29 Ace Hardware). It is working great even on dark Welsummer eggs. The black electrical tape around the hole is there to act as a cushion so as to not damage the eggs.